Dynamics for partially coherent Bose-Einstein condensates in double wells

TL;DR

This paper explores the dynamical behavior of partially coherent Bose-Einstein condensates in double wells across three regimes, revealing how coherence and initial conditions influence phenomena like Rabi oscillations and self-trapping.

Contribution

It provides a detailed analysis of coherence dynamics in different regimes, linking coherence decay, oscillation amplitude, and initial phase to observable phenomena.

Findings

Rapid decay of coherence in the Fock regime

Relation between Rabi oscillation amplitude and coherence

Influence of initial phase on self-trapping

Abstract

The dynamical properties of partially coherent Bose-Einstein condensates in double wells are investigated in three typical regimes. In the extreme Fock regime, the time evolution of the degree of coherence is shown to decay rapidly. In the Rabi regime, a relation between the amplitude of Rabi oscillation and the degree of coherence is obtained, which is expected to determine the degree of coherence by measuring the amplitude of Rabi oscillation. The study on the self-trapping phenomena in the Josephson regime exhibits that both the degree of coherence and the initial relative phase can affect the final particle distribution.